A two-node cluster was restarted. The shard of one index failed to merge. The error is as follows:
failed shard on node [VosGChW1QTudYo9Tcl5sqg]: shard failure, reason [merge failed], failure NotSerializableExceptionWrapper[merge_exception: org.apache.lucene.index.CorruptIndexException: checksum failed (hardware problem?) : expected=5c0086c8 actual=1b883035 (resource=BufferedChecksumIndexInput(MMapIndexInput(path="/usr/share/elasticsearch/data/nodes/0/indices/mAcbjUzNTYO9SXqgGATv3w/3/index/_w2a_Lucene84_0.tim")))]; nested: CorruptIndexException[checksum failed (hardware problem?) : expected=5c0086c8 actual=1b883035 (resource=BufferedChecksumIndexInput(MMapIndexInput(path="/usr/share/elasticsearch/data/nodes/0/indices/mAcbjUzNTYO9SXqgGATv3w/3/index/_w2a_Lucene84_0.tim")))];